摘要
该文采用示差脉冲伏安法、循环伏安法等电化学技术研究了尿酸(UA)、黄嘌呤(XA)、次黄嘌呤(HX)在纳米金/氧化聚邻苯二胺复合材料(Au/p-OPDox/GCE)修饰电极上的电化学行为。在最优的实验条件下,结果显示,该修饰电极对UA、XA和HX均有较好的电催化活性作用,能实现对三种物质的同时测定。UA、XA和HX在该修饰电极上的线性范围分别为3~345、2~113和5~402μmol/L;检测限分别为1.0,1.6和1.5μmol/L。
In this paper, the modified electrode was proposed for the simultaneous determination of uric acid(UA),xanthine(XA) and hypoxanthine(HX) based on oxidized poly(o-phenylenediamine) and gold nanoparticles. Also,cyclic voltammetry(CV) and different pulse voltammetry(DPV) were employed to characterize the modified electrode.Under the optimal conditions, The results showed that the chemically modified electrode displayed excellent electrochemical catalytic activities towards UA,XA and HX. The calibration curves for UA、XA and HX were obtained in the range of 3 ~345、 2 ~113 and 5 ~402 μmol/L with detection limits of 1.0,1.6 and 1.5 μmol/L,respectively.
引文
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